Re: Bonding question

David A Froble

On 10/19/2021 10:58 AM, Larry Pilkington wrote:
What loads will be applied to this tube?
Think "main spar". The cables going to the wing attach to each end of the tube.
It is mainly a tension load. Tube is installed in composite structure side walls,
with 9-10 layers of BID to reinforce side wall. There should not be any "turning"
loads. I can get a bit paranoid about things. Sometimes that is good.

My current thoughts:

Don't worry, it is not an issue.

Drill tube, install pins/bolts, then bond.

Drill tube, install without bolts, then re-drill fiberglass to install bolts.

David Froble Tel: 724-529-0450
Dave Froble Enterprises, Inc. E-Mail:
DFE Ultralights, Inc.
170 Grimplin Road
Vanderbilt, PA 15486

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